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Develop highly selective and sensitive PK and ADA assays for ustekinumab (Stelara) using our range of ready-made anti-idiotypic antibodies.
Table 1. Antibodies Specific to Ustekinumab.
Specificity |
Catalog Number |
Clone |
Format |
Affinity* KD, nM |
Assay Recommendation |
Product Details |
---|---|---|---|---|---|---|
Ustekinumab Inhibitory Type 1 |
HCA208 |
AbD17829 |
Fab-V5Sx21 |
2.8 |
PK bridging ELISA |
|
HCA209 |
AbD18334 |
Fab-FH2 |
0.4 |
PK bridging ELISA |
||
HCA210 |
AbD17827_hIgG1 |
hIgG1 HRP |
0.2 |
PK bridging ELISA ADA control |
||
HCA211 |
AbD17829_hIgG1 |
hIgG1 |
2.8 |
ADA control |
* Affinity measured in the monovalent Fab format
1 Monovalent Fab antibody, V5- and StrepX-StrepX- tags
2 Monovalent Fab antibody DYKDDDDK- and His-6-tags
Type 1 anti-ustekinumab antibodies inhibit the binding of the drug ustekinumab to its targets, human interleukin 12 (IL-12) and interleukin 23 (IL-23). They are ideal for development of a pharmacokinetic (PK) bridging ELISA to measure free drug. In fully human IgG1 format they are available in two affinities, and are suitable as a surrogate positive control or calibrator for an anti-drug antibody (ADA) assay.
Fig. 1. Ustekinumab PK bridging ELISA using antibodies HCA209 and HCA210P.
Schematic image of PK bridging ELISA measuring free drug. Anti-idiotypic capture antibody, Fab format (purple), monoclonal antibody drug (gold), anti-idiotypic detection antibody, Ig format (blue), labeled with HRP.
Fig. 2. Ustekinumab ADA bridging ELISA using antibody HCA210 or HCA211.
Schematic image of ADA bridging assay. Monoclonal antibody drug as capture antibody and detection antibody labeled with HRP (gold), fully human anti-idiotypic antibody, Ig format (blue).
Licensed Use: For in vitro research purposes and for commercial applications for the provision of in vitro testing services to support preclinical and clinical drug development. Any re-sale in any form or any other commercial application needs a written agreement with Bio-Rad.